Abstract: A method for controlling an arc furnace is disclosed. In first step, many V-curved correlations between a value of arc current and a specific electric power consumption are obtained with respect to each of a plurality of measuring melting materials of various different scrap blendings. Next, in factory operation of the arc furnace, a melting material is melt at an arc current value in the bottom of the curve or in the vicinity of the bottom where the specific electric power consumption is minimal in the pre-obtained V-curve correlation with respect to the measuring melting material of scrap blending corresponding to scrap blending of the melting material to be melted.